And do not try to feed me that line about how "none of the 9/11 hijackers came from Mexico". Waiting until AFTER it happens to act is suicidal. As porous as the border is right now.. terrorists would have NO PROBLEM crossing the south border. As it gets tougher to come in other ways.. do not kid yourself in thinking that option will never occur to them.
How hard could it be for a few PRC intelligence assets to come across with them?